Got it wrong! Emergency Room’s embarrassed (5)
I believe the answer is:
erred
'got it wrong' is the definition.
(to err is to do wrong or go wrong)
'emergency room's embarrassed' is the wordplay.
'emergency room' becomes 'ER' (abbreviation popularized by US TV series).
'embarrassed' becomes 'red' (I've seen this before).
'er'+'red'='ERRED'
(Other definitions for erred that I've seen before include "Was mistaken" , "Went wrong" , "Sinned" , "Committed a sin" , "slipped up" .)